# Test 1: OECD Bundle Decomposition

What institutional feature attenuates the OECD savings channel?


## gross_savings_gdp

| Model | Z₁ | Key Interaction | OECD (if present) | N | R² |
|---|---|---|---|---|---|
| M1: +OECD | 127.168*** | -119.086* | -119.086* | 6642 | 0.131 |
| M2: +Pension high | 116.228*** | -35.740 | -- | 6642 | 0.131 |
| M3: +Pension+OECD | 127.539*** | -20.880 | -109.821 | 6642 | 0.131 |
| M4: +Pension(cont) | 116.831*** | -16.375 | -- | 6642 | 0.128 |
| M5: +Health | 100.040*** | -48.820*** | -- | 6642 | 0.159 |
| M6: Full | 110.773*** | -18.432 | -61.417 | 6642 | 0.159 |

## ca_gdp

| Model | Z₁ | Key Interaction | OECD (if present) | N | R² |
|---|---|---|---|---|---|
| M1: +OECD | 22.457 | -52.375 | -52.375 | 7624 | 0.033 |
| M2: +Pension high | 27.165* | -69.310 | -- | 7624 | 0.029 |
| M3: +Pension+OECD | 21.742 | -52.740 | -36.439 | 7624 | 0.034 |
| M4: +Pension(cont) | 27.776** | 15.531 | -- | 7624 | 0.026 |
| M5: +Health | 19.655 | -44.571*** | -- | 7624 | 0.034 |
| M6: Full | 15.093 | -1.985 | -30.025 | 7624 | 0.038 |

*Pension spending standardized (mean=0, SD=1). Pension high = above median pension/GDP.*
